Improvement in floor-clamps



GEORGE B. .PERKiNfs 0F 'UTLGLNEW YORK.

Letters Patent No. 871,531, dated August 25, 1868.

IMPROIEMENT IN FLOOR-GLAMPS.

@in rlnhule maar te in time tetters timt zum nmlaitg'pmt ni tigt smite.

f Be it known that I, GEORGE B. PERKINS, of the city of Utica, county of Oneida, in the State of New York, haveinvented a new and useful machine for layingmatched boards for house-floors, or for sidingup buildings or ceiling overheadfnrhere it is A'dcsiredto be brought up to a 'close joint. The machine I shall call a. Floor-Jack; and I do hereby declare that the following is a full and exact description thereof.

The nature of my invention `consists of a piece of hard-wood plank, four feet in length, eight inches broad at one end, and two inches thick, tapered down to twoinchcs in circumference, which forms a handle. At the bottoni of thewide end, ahalf inch. from the end', is a groove cut, sucicnt. to receive the tongue of the board intended to be laid. Right opposite of the groove, on theother side of the handle, is a steel brace, seventeen inches long, made in the shape of a. half circle, with a hinge at one end, which is attached tothe handle. The other end of this brace is cut with teeth in it, so that, as the groove lof the handle is placed on the tongue of theboard, by raising the handle, the teeth are inserted iiicoV the joist that the hoard rests on, and thc board is crowded yup to a tightjont, and held fast to its place by a Wooden brace, eighteeninchcs long, attached to the under side of the handle, seventeen inches fromthe groove in the handle. As the machine is placed in operation on the board, as the handle is brought up. nearly perpendicular, a slight touch with `the foot will set the hra'cc, so it -will hold Vthe board tight until it can bcnailcd...

The letters. a, b, C, d, and E, describe the di'erent parts of the machine: A, the handle; b, the steel brace; C, the groove; d, joistj E, the wooden brace; F, t'he oor.

' Gleim. v

I claim aclamp'for layinglmatchcd. honda-'consisting of the lever A, dol-f:l B, groove C, and brace E, all

constructed to operate substantially as described. l I v GEORGE B. PERKINS.

Witnesses:

ROBERT SPENCER DnYnn,.

' JOHN Elanna.l 

